Monster Hunter Won't Load

So, I know I'm not the first person to post this problem, but I will explain it anyway.

I load up Monster Hunter Tri using Neo Gamma. It loads fine until I choose the first option and then it make this loud annoying beeping noise.

I've been searching around the web for a few hours now, and everyone says that I need to change my ios249 to a different ios. The only problem is that I'm still a noob when it comes to this whole modded-wii stuff and I don't know how to change my ios...